Difficult Test for Dedicated...

[rightrook]

[D]r4kr1/pp1b1p1Q/4pB2/3nP2P/3N3R/q7/P4PP1/2R3K1 w - - 0 1

White plays Rc7...!

RISC takes 7 ply......9 min. 42 sec.

Mach 3..........takes 8 ply....about 9 hours to find...!

regards

Robert

[yanquis1972]

wow, i would fall out of my chair if a dedicated played such a move. idea of course is 1. Rc7 Nxc7 2. h6 Qc1+ 3. Kh2 Qd2 4. Qxg8+ Kxg8 5. h7+ Kf8 6. h8=Q#

only two (modern computer) engines i tried could find the move by depth 8, those being the obvious candidates of bright & rybka. (of course, people say rybka's depth is artificial so that may be with a grain of salt). stockfish was 2nd fastest, at depth 9. even HIARCS was one of the slower ones, i beileve taking until depth 11 or 12 to find the move. none matched RISC's depth of only 7. this was all on multiple cores which couldve helped or hampered the search, depending.

[Terry McCracken]

[D]r4kr1/pp1b1p1Q/4pB2/3nP2P/3N3R/q7/P4PP1/2R3K1 w - - 0 1

White plays Rc7...!

RISC takes 7 ply......9 min. 42 sec.

Mach 3..........takes 8 ply....about 9 hours to find...!

regards

Robert

I'm impressed Risc found it so quickly! The time for the Mach 3 doesn't surprise me. I bet the Novag Forte "C' might beat that time. Haven't checked.

I would consider the tactics to be medium to medium hard difficulty, easy for top software and hardware. Not so for dedicateds.

[rightrook]

Hi Terry..........Well, be prepared to wait.....

I had a Novag Scorpio work on it all night once and it did not find it...........

regards

Robert

[Terry McCracken]

Hi Terry..........Well, be prepared to wait.....

I had a Novag Scorpio work on it all night once and it did not find it...........

regards

Robert

Then the Forte "C" won't find it either.

[Steve B]

Hi Robert

any particular dedicated model you would like to see take a shot at the position?

i can give it a go this weekend

Regards
Steve

[Spock]

Hi Robert

any particular dedicated model you would like to see take a shot at the position?

i can give it a go this weekend

Regards
Steve

The Tasc R30 - we need a distraction

[Steve B]

Hi Robert

any particular dedicated model you would like to see take a shot at the position?

i can give it a go this weekend

Regards
Steve

The Tasc R30 - we need a distraction

the R30 is currently engaged in matters of National Importance

feel free to choose any other computer

http://www.flickr.com/photos/10261668@N05/sets/

Top Secret Regards
Steve

[rightrook]

Hi Steve......What a great collection you have.......well, I think the Saitek Cougar should find the move....if you have the time....we can compare the result to the RISC 2500...

I "predict" about 7 or 8 ply for Cougar to find it....



Thanks....

regards

Rob

[Steve B]

I "predict" about 7 or 8 ply for Cougar to find it....

Sadly Rob
the Cougar doesn't find Rc7 even after 40 min and 9 ply
it prefers to play Rb1

Toothless Cougar Regards
Steve